From 1fc916b976dd504766ff176d5259163def65e150 Mon Sep 17 00:00:00 2001
From: Sam Figueroa <unimatrixzxero@gmail.com>
Date: Fri, 16 Oct 2015 08:06:12 +0200
Subject: [PATCH] Add delete_all to paranoid
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- don’t let people destroy paranoid models with delete_all
---
 lib/paranoia.rb       |  4 ++++
 test/paranoia_test.rb | 30 ++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/lib/paranoia.rb b/lib/paranoia.rb
index 75e9c5eb..5b478295 100644
--- a/lib/paranoia.rb
+++ b/lib/paranoia.rb
@@ -249,6 +249,10 @@ def self.I_AM_THE_DESTROYER!
   def self.paranoid? ; false ; end
   def paranoid? ; self.class.paranoid? ; end
 
+  def self.delete_all(conditions=nil)
+    super and return unless paranoid?
+    where(conditions).update_all(self.new.send :paranoia_destroy_attributes)
+  end
   private
 
   def paranoia_column
diff --git a/test/paranoia_test.rb b/test/paranoia_test.rb
index f6fe129a..321c97ea 100644
--- a/test/paranoia_test.rb
+++ b/test/paranoia_test.rb
@@ -879,6 +879,36 @@ def test_uniqueness_for_unparanoid_associated
     related.valid?
   end
 
+  def test_delete_all
+    model = ParanoidModel
+    count = 3
+    models = count.times.map { model.new }
+    assert_equal 0, model.count
+    models.each(&:save!)
+
+    assert_equal count, model.count
+    model.delete_all
+
+    assert_equal 0, model.count
+    assert_equal count, model.with_deleted.count
+
+    assert model.with_deleted.all?(&:deleted?)
+  end
+
+  def test_delete_all_for_non_paranoid_model
+    model = PlainModel
+    count = 3
+    models = count.times.map { model.new }
+    assert_equal 0, model.count
+    models.each(&:save!)
+
+    assert_equal count, model.count
+    model.delete_all
+
+    assert_equal 0, model.count
+    assert_equal 0, model.unscoped.count
+  end
+
   # TODO: find a fix for Rails 4.1
   if ActiveRecord::VERSION::STRING !~ /\A4\.1/
     def test_counter_cache_column_update_on_really_destroy